EP1794366A2 - Procede de production d'une substance a base de cellulose, et substance ainsi produite - Google Patents

Procede de production d'une substance a base de cellulose, et substance ainsi produite

Info

Publication number
EP1794366A2
EP1794366A2 EP05790018A EP05790018A EP1794366A2 EP 1794366 A2 EP1794366 A2 EP 1794366A2 EP 05790018 A EP05790018 A EP 05790018A EP 05790018 A EP05790018 A EP 05790018A EP 1794366 A2 EP1794366 A2 EP 1794366A2
Authority
EP
European Patent Office
Prior art keywords
paper
cellulose
base material
cardboard
dispersion
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP05790018A
Other languages
German (de)
English (en)
Other versions
EP1794366B1 (fr
Inventor
Harald Schlosser
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
J Rettenmaier and Soehne GmbH and Co KG
Original Assignee
J Rettenmaier and Soehne GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=36119249&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1794366(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by J Rettenmaier and Soehne GmbH and Co KG filed Critical J Rettenmaier and Soehne GmbH and Co KG
Publication of EP1794366A2 publication Critical patent/EP1794366A2/fr
Application granted granted Critical
Publication of EP1794366B1 publication Critical patent/EP1794366B1/fr
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/50—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by form
    • D21H21/52—Additives of definite length or shape
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/01—Waste products, e.g. sludge
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/02—Material of vegetable origin

Definitions

  • the invention relates to the field of materials containing cellulose or converted cellulose. It also relates to the field of natural and artificial fibers and the sheet-like products produced therefrom. These include primarily paper and cardboard. These are known to be made mainly from natural fibers, but also from artificial fibers.
  • High quality papers are marked with a line.
  • so-called coating color is applied to the finished paper web.
  • the coating color generally consists of a dispersion, for example based on kaolin.
  • the painting should meet different, different requirements for the finished paper. These include the improvement of printability, transparency, surface, flatness and more.
  • the invention has for its object to provide a method by which can produce a substance that is suitable as an aggregate for the products mentioned, thus for paper, cardboard and coating colors.
  • the process according to the invention uses cellulose as starting material.
  • Suitable cellulosic suppliers are plants of all kinds, above all wood, but also cereal straw, bamboo, grass, flax or hemp, any kind of native cellulose.
  • the techniques of cellulose recovery are known.
  • Wood chips for example, are produced from wood, and the wood chips are subjected to a boiling process (by the sulphite or sulphate process), whereby lignins and hemicelluloses are dissolved and the cellulose fibers remain.
  • lignins and hemicelluloses are dissolved and the cellulose fibers remain.
  • fibrous materials as starting material for paper and board production by grinding wood with the addition of water. In this case, no leaching of the lignin takes place.
  • the treatment of the starting material may involve its cooking with the addition of acid. But it can also be worked acid free. If you work acid-free, the cellulose-containing starting material is mixed with water and subjected to a shearing process.
  • the cellulose fibers are mixed with an acid, the mixture is heated so that the cellulose is hydrolyzed - the resulting hydrolyzed cellulose is converted into a dispersion by addition of water or with / without comminution aids.
  • the dispersion is subjected to a shearing process to add the cellulose particles mince.
  • the crushing is carried out until reaching the nano-area.
  • the resulting product thus the mentioned base material, is present in particles with an average particle size of 0.1 to 100 my, for example, a particle size of 1 to 20 my.
  • the base material is referred to below as "Nano Disperse Cellulose” (NDC).
  • the base material obtained in this way is now added to the fiber-containing material mentioned at the outset. This can be in solid or liquid form happen. Thus, the base material of the pulp suspension can be added even before it reaches the paper machine. The base material can also be added to the coating color before it is applied as a line on the fibrous web of paper or cardboard.
  • the mentioned shearing process can be treated in a variety of paper making facilities, for example in grinding units such as refiners.
  • the base material may be partially collodially or partially dispersed.
  • the base fabric can be added to the pulp which forms the paper or board web, or the coating color, in varying amounts. So it is conceivable that the finished paper contains between 0.1 and 50% NDC. In general, the proportion of NDC in the finished paper will be 0.1 to 5% by weight.
  • the NDC according to the invention can also be used in combination with other materials to the pulp, which forms the sheet product such as paper or cardboard, or the coating color.
  • materials to the pulp such as paper or cardboard, or the coating color.
  • CMC carboxymethylcellulose
  • kaolin binders, cobinders, thickeners, thixotropic agents, carriers and others are contemplated.
  • An essential idea of the invention is the use of the base material produced as an additive for paper or cardboard. It is essential that the base material has an average particle size below 25 my, preferably between 10 and 20 my or between 0.5 and 20 my.
  • testliner Triplex cardboard Solid cardboard Wax paper Corrugated paper Corrugated paper Wrapped cardboard
  • the papers may be so-called base papers, d. H. free from any strokes. You can also include a dash in each case.
  • the base material according to the invention may be added to the base paper or the coated paper. In the latter case, the base stock may be added either to the paper itself, or to the line, or both.
  • the paper may contain inorganic fillers in a known manner, and also inorganic pigments such as calcium carbonate, kaolin, titanium dioxide, talcum.
  • the paper may also contain the usual chemical additives such as binders, co-binders, paint additives, sizing agents, wet strength agents, dry strength agents, chelants, colorants, optical brighteners, biocides, dispersants, defoamers, deaerators, detergents, retention aids, dehydrating agents, fixatives, flocculants.
  • the base material of the invention may be added, in small quantities of a few weight percent, based on the weight of the total product, as well as in a high percentage.
  • tissue paper contains only 1, 2, ... 5 wt .-% of base material, but also about 20%, for example, 20, 30, 40, 50 and more%.
  • the hygiene paper may also contain substances for cosmetic and beauty care. Such substances could also be added, for example, to the base material according to the invention.

Landscapes

  • Paper (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

L'invention concerne un procédé de production d'une substance de base à base de cellulose, comprenant les étapes qui consistent : à mélanger un produit de départ contenant de la cellulose avec de l'eau ; à chauffer ce mélange, de manière à hydrolyser le produit contenant de la cellulose ; à soumettre le mélange à un processus de cisaillement, de manière à désintégrer les particules de cellulose jusqu'à l'échelle nanométrique, et ainsi obtenir la substance de base ; à ajouter cette substance de base à un autre matériau fibreux solide ou liquide.
EP05790018.5A 2004-09-27 2005-09-27 Procede de production d'une substance a base de cellulose, et substance ainsi produite Revoked EP1794366B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004047127 2004-09-27
PCT/EP2005/010421 WO2006034837A2 (fr) 2004-09-27 2005-09-27 Procede de production d'une substance a base de cellulose, et substance ainsi produite

Publications (2)

Publication Number Publication Date
EP1794366A2 true EP1794366A2 (fr) 2007-06-13
EP1794366B1 EP1794366B1 (fr) 2013-04-24

Family

ID=36119249

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05790018.5A Revoked EP1794366B1 (fr) 2004-09-27 2005-09-27 Procede de production d'une substance a base de cellulose, et substance ainsi produite

Country Status (3)

Country Link
EP (1) EP1794366B1 (fr)
ES (1) ES2416384T3 (fr)
WO (1) WO2006034837A2 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE538246T1 (de) * 2006-02-23 2012-01-15 Rettenmaier & Soehne Gmbh & Co Rohpapier und verfahren zu dessen herstellung
EP2022801B1 (fr) * 2007-08-10 2018-01-17 Dow Global Technologies LLC Nanoparticules en cellulose amorphe
EP2022802B1 (fr) 2007-08-10 2017-03-22 Dow Global Technologies LLC Nanoparticule en cellulose peu oxydée
AT505905B1 (de) 2007-09-21 2009-05-15 Chemiefaser Lenzing Ag Cellulosepulver und verfahren zu seiner herstellung
DE102008051359A1 (de) * 2008-10-15 2010-04-22 J. Rettenmaier & Söhne Gmbh + Co. Kg Ultrafeine, trockene Cellulose
DE102009036551A1 (de) * 2009-08-10 2011-02-17 J. Rettenmaier & Söhne Gmbh + Co. Kg Faserstoffhaltiges Material auf Cellulosebasis
US9776900B2 (en) 2014-01-14 2017-10-03 Buckman Laboratories International, Inc. Use of celluloses in sludge dewatering, and sludge products thereof
CN108517712A (zh) * 2018-03-12 2018-09-11 华南理工大学 一种造纸用微纳米纤维色浆及其制备方法与应用

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3618377A1 (de) * 1986-05-31 1987-12-03 Wolff Walsrode Ag Verfahren zur herstellung von mikrokristalliner cellulose
GB9101965D0 (en) * 1991-01-30 1991-03-13 Sandoz Ltd Improvements in or relating to organic compounds
DE4309845C2 (de) * 1993-03-26 1996-10-31 Seitz Filter Werke Filtermaterial und Verfahren zu seiner Herstellung

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2006034837A3 *

Also Published As

Publication number Publication date
WO2006034837A3 (fr) 2007-03-29
ES2416384T3 (es) 2013-07-31
WO2006034837A2 (fr) 2006-04-06
EP1794366B1 (fr) 2013-04-24

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